I knew this would happen after Toei 7th Sisters.

Toei got a taste for the Idols.
https://www.crunchyroll.com/news/latest/2024/11/29/22nd-precure-tv-series-kimi-to-idol-precure-toei-animation?srsltid=AfmBOoq5S5wBVh22mZTlbONkPCz1zTlWkBeZn2oOJ8AzoBHzlhWGjo4J

And once you get a taste, you just want more.